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Electrical
Where does this wire go?
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  Topic Review (Newest First)
02-18-2020 03:57 PM
Spockster
Quote:
Originally Posted by Jason Pittenger View Post
So as to not be another DenverCoder9 (https://xkcd.com/979/), I discovered the issue was actually corrosion on the stator connections. My charging voltage was low. After several hours on the trickle charger, it ran great!

I'm changing my coil wiring over the winter to run direct (through a relay) with higher gauge wiring.
Voltage is everything on this ignition. I have a theory that low voltage causes the CDi to retard timing, via that wire branching off the start circuit to the CDI. Pretty easy to check the theory, but never had time/energy to get it done.

I missed your 10-2-19 post. Problems with slides sticking can be the diaphragms and sometimes scuffing of the slide/slide bore, which can be polished smooth (vertical motion only) to ease the sticking.
02-18-2020 02:23 PM
Jason Pittenger So as to not be another DenverCoder9 (https://xkcd.com/979/), I discovered the issue was actually corrosion on the stator connections. My charging voltage was low. After several hours on the trickle charger, it ran great!

I'm changing my coil wiring over the winter to run direct (through a relay) with higher gauge wiring.
10-02-2019 05:03 PM
Jason Pittenger
Quote:
Originally Posted by Spockster View Post
I thought the tests on your coils, hot/cold, looked ok.
I didn't have time to measure cold this morning, but hot measurements seem fine. However, I just noticed in the manual that the measurements are supposed to include the plug wires! I measured at the coil itself.

Let's say it is the slides. What would be the fix? I suspect the fix would be spraying some lubricant on them? That'd be something cheap to try, even if it wasn't the problem.

Either way, I've heard the stock ignition is only adequate. Even if the coils are good, I might upgrade. I'm still thinking about bumping the timing up to the max allowed in the manual. It states 5 at idle, but the chart shows a range of (4-6 or 4-7).
10-02-2019 12:19 PM
Spockster I thought the tests on your coils, hot/cold, looked ok.

CDi maybe? Just not sure.

Might not hurt to observe carb slide action, hot/cold.
10-02-2019 09:52 AM
Jason Pittenger Thanks! I'll measure my primary voltage.

What do you think about these?
https://www.amazon.com/Dynatek-Coil-.../dp/B005G5RDTU

Primary 2.2 ohms (Stock coils are 1.8-2.2)
Secondary 14,000 ohms (Stock coils 19-29k)

Seems close enough, though the secondary is below spec.

Quote:
Originally Posted by Chris Allunario View Post
I have a used oem that I'll sell to you. I thought I needed it when I lost power to a cylinder but it was a grounded pickup coil
Do you have just one, or a pair available?
10-01-2019 06:24 PM
Spockster Just had a thought ... Using automotive ign coils means four coils to mount and wire up.

Looks like there are plenty of twin lead coils available, just have to shop for a good price, $180 for the one I looked at is pretty steep.
http://www.vmxunlimited.com/ignition...ad-2-terminal/

Where to put four of these?

10-01-2019 02:24 PM
Spockster
Quote:
Originally Posted by Jason Pittenger View Post
I'm not families with this mod?
https://www.vn750.com/forum/19-elect...lay-mod-6.html
10-01-2019 12:29 PM
Jason Pittenger
Quote:
Originally Posted by Sparkys73150 View Post
I would do the 12 volt coil mod also. That should help with the hot starts.
I'm not familiar with this mod?
09-30-2019 08:56 PM
Sparkys73150 I would do the 12 volt coil mod also. That should help with the hot starts.
09-30-2019 06:21 PM
Spockster I've seen one set of performance coils since I began shopping VN parts, they were on ebay.

In the old days I ran automotive performance coils on bikes with points type ignition. Those might work on the VN, they all work on the same principle, and connect the same way.
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